This link takes you to a Korgmeister:

http://korgpa2xpro.yolasite.com/

Now, it is aimed primarily at the Pa2X, but while I'm not familiar with the Micro myself, I'm sure you'll find more than a few things useful here, as the Micro is based on a Pa series arranger. His "a-z" section is very useful. Hope it helps you guys out.

p.s. He also has something simliar dealing with Yamahas - but maybe you already know about that.